GB2157334A - Floor drain - Google Patents

Abstract

A method of joining a floor drain to a floor, in which the drain is inserted between and resting on a pair of joists and is fastened thereto by means of nails or screws through lugs projecting from a mounting flange secured to the drain the mounting flange may be ground down and adjusted to match the height of the surrounding floor. A mat may be glued onto the floor by means of a clamping ring. <IMAGE>

Description

SPECIFICATION A method of joining a building detail to a building component The present invention relates to a method of joining a drain, a ventilation means or like detail to a building component, e.g. a floor or a wall, and is especially directed to a method of providing a drain in a floor.

The floor drains mainly used are mounted in suspended condition in the floor. In the floor bedding a hole has been made for the floor drain and in certain cases a depression has been chiseled out around the hole for the mounting flange of the drain. Mostly the flange is provided with a number of screw holes for fastening the drain in the floor bedding. However, the screw joints will be situated too close to the hole border so that they cannot be considered safe and the chiseling will mostly become uneven and therefore the floor drain will not lie steady. There are machines for milling out the depression around the holes but they are so expensive that they are rarely used. Moreover, the suspension flange is so thin that there is only a very limited grinding margin left for the adaptation of the flange to the floor surface.In other words, the mounting flange constitutes a hindrance to the water run-down in the floor drain. It has also been found that the floor drain may climb up and out of the floor hole.

Another problem entailed with existing floor drains is that, if the floor is to be covered with a mat, then the mat must be turned down 90 in the floor drain. This results in a roll in the mat which prevents run-down in the floor drain. The size of the roll depends upon the stiffness of the mat. The heavy fold-down also involves that the mat will be liable to come loose from the bedding, whereby moisture will creep in under the mat, which is facilitated if the mat has pressed the clamping ring out of position.

Thus, there are great problems entailed with the floor drains used today and with the quality of mounting which may be required in connection with building operations as well as heating, water and sanitation operations.

From statistics produced by the Insurance Company's Building Repairs Committee it appears that the construction as well as the mdunting of a conventional floor drain has led to a very large number of moisture and water damages.

The above disadvantages are overcome by means of the present invention. The floor drain is firmly secured to a joist and not in the floor bedding. The height of the mounting flange is adjusted to the adjacent top side of the floor bedding. The upper side of the flange is arched and comparatively broad so that a smooth transition from the floor bedding and a curve less than 45 will be obtained near the clamping ring, which means that the mat can be safely glued on to the drain. A clamping ring, which is firmly snapped in the floor drain, will anchor the mat tightly in the drain.

The invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is a top view showing the floor drain fixed to a supporting means; Figure 2 shows the drain in a section A-A in Fig. 1; and Figure 3 shows a broken-out part of the drain in mounted condition and in a section B- B in Fig. 1.

When the floor drain 1 is to be mounted the underside 3 of the mounting flange 2 is placed on a floor joist 4 so that a pair of fastening lugs 5 projecting from the underside 3 of the flange will rest in corresponding depressions 6 in the joist 4. The lugs 5 may preferably consist of metal tongues which are screwed 7 firmly into the underside 3 of the mounting flange or cast into the flange and directed radially outwards from the flange.

After that the floor drain is fixed to the joist by means of nail or screw joints 8 through holes in the lugs.

A telescopic support 9 (for instance of the type shown in Swedish Patent Application 8401906-6) between the bottom part 10 of the floor drain and the floor plate 11 makes it possible to orient the drain. A supplementary joist element 1 2 of adjusted height may be arranged under the mounting flange 2 substantially parallel with the joist 4. By means of nail or screw joints 1 3 through holes in the lugs 1 4 the floor drain is also fixed to the joist element 12.

The flooring, e.g. boards or tiles 15, are laid on the floor joists 4, and a tile preferably having a circular recess corresponding to the periphery 1 6 of the mounting flange and a thickness at the recess substantially corresponding to the height of the flange, is passed on the floor drain.

Adjustment of the floor drain to the adjacent tile is effected by applying, at the points where the mounting flange does not reach up to the upper boundary surface of the tile, a filler on the arched upper side 1 7 of the flange, up to the level of or somewhat above said surface. Thereupon the flange is ground and so is also, if required, the adjacent portion of the tile, so that excess portions 1 8 will be removed and a smooth transition obtained between the tile and the floor drain.

As appears from Fig. 2 the mounting flange may, for foundry-technical reasons, be formed with a number of void segments 1 9 which are open towards the flange periphery 16. If, by misfortune, the flange should be ground down about 9 mm, in connection with the adjustment of the floor drain, the void segment will open towards the surface 1 7. The damage can then preferably be compensated for in that the void segment is completed with filler.

Finally, a wet-room mat 20 is glued on to the flooring and on the arched top side 1 7 and inside 21 of the mounting flange 2. The smooth transition obtained between the tile and the flange makes that there will arise no roll or break in the mat. The arched top side 1 7 also involves that, when the mat is to be glued on to the inside 21 of the flange, it need be broken less than 45 . Thereupon a clamping ring 22 is carried down in the floor drain. The clamping ring is provided with two diametrically opposite snapping means 23 at the underside of the clamping ring; see Fig.

3. These are oriented over interacting snapping means 24 on the clamping ring shelf 25 in the floor drain. When the clamping ring is pressed down into the drain, the mat is pressed against the inside 21 of the mounting flange and annular beads 26 on the inside, whereby a seal is obtained against water leakage. As the clamping ring 22 is further pressed down the snapping means 23, 24 will be brought into engagement with one another whereby the clamping ring is locked up to the clamping ring shelf 25 and the mat 20 will be safely anchored in the floor drain.

A grating 27 is finally placed on the upper side of the clamping ring and above the water seal 28.

Joining of the floor drain to a cast concrete floor may be carried out by fastening the floor drain resting on a supporting means which is arranged on the floor structure or the bottom plate. The supporting means may consist of a slit and vertically adjusted cylindrical reinforcement with a sand bed included therein.

Rough casting of the floor is carried out a to a level approximately flush with the underside of the mounting flange. During the subsequent fine casting the mounting flange and the adjoining floor surface are brought approximately on a level with each other. Thereupon the mounting flange is adjusted to the adjoining floor by filling and grinding in the manner described above. Finally a mat may be glued on, or a surface coating may be applied to the floor and the mounting flange.

Claims (9)

CLAIMS 1. A method of joining a drain, a ventilation means or like detail to a building component, e.g. a floor or a wall, characterized in that portions of the underside (3) of a mounting flange (2) of the detail (1) are applied and attached to a supporting means (4, 12) included in the building component, that material (15) surrounding the detail is applied around the periphery (16) of the flange, that the height of the flange is adjusted to that of the surrounding material, and that a surface layer (20) is applied to said surrounding material (15) and the flange (2). 2. A method as claimed in claim 1, characterized in that flange material is removed, if required, from the respective material, e.g. filler, is applied to the upper side (17) of the flange so that its level will substantially correspond to the adjacent outside of the surrounding material (15). 3. A method as claimed in claim 1 or 2, characterized in that the detail (1) is attached by means of screw or nail joints (8, 1 3) to joists (4, 12) included in the building component, that a floor material portion (15), provided with a hole, constituting the surrounding material and being of substantially the same thickness as the height of the flange is passed on the detail, and that after height adjustment of the flange, a mat (20) or wallpaper is glued on to the tile (15) and the upper side (17) of the flange. 4. A method a claimed in claim 3, characterized in that the detail (1) is attached, by means of a pair of lugs (15) projecting from the underside (8) of the flange, to a first joist (4), that a supporting means (9) is arranged between the underside (10) of the detail and the building component (11) for orientation of the detail (1), that a second joist (12) is arranged approximately parallel with said first joist (4), and that the detail (1) is attached to the second joist (12) by means of at least one lug (14) projecting from the underside (8) of the flange. 5. A method as claimed in claim 3, characterized in that a mat (20) or a wallpaper is glued on to the tile (15) and the upper side and inside (17, 21) of the flange, and that a clamping ring (22) is applied to press the mat (20) or the wallpaper against the inside (21) of the flange. 6. A method as claimed in claim 5, characterized in that a pair of diametrically opposite snapping means (23) on the underside of the clamping ring (22) are oriented over corresponding snapping means (24) in the building detail (1), and that the clamping ring (22) is pressed against the building detail (1) to bring the respective snapping means (23, 24) into engagement with one another. 7. A method of joining a detail to a building component as claimed in claim 1 and substantially as described herein. 8. A detail mounted on a building component substantially as described herein with reference to, and as shown in, the accompanying drawings. CLAIMS Amendments to the claims have been filed, and have the following effect: Claims 1-8 above have been deleted or textually amended. New or textually amended claims have been filed as follows:

1. A method of joining a drain, a ventilation means or like detail to a building component, comprising the steps of: attaching por tions of the underside of a mounting flange of the detail to joists included in the building component; providing a floor material portion, having a hole substantially corresponding to the periphery of the flange and being of substantially the same thickness as the height of the flange around the detail; equalising, if required, the respective heights of the flange and the floor material portion either by removing the material from both the flange and the floor material or by applying a material to the upper side of the flange so that its level will substantially correspond to the adjacent outside of the surrounding floor material portion; and, after said height equalisation, fixing a covering material onto the floor material and the upper side of the flange.

2. A method according to claim 1, wherein the material, which is applied to the upper side of the flange so that its level substantially corresponds to the adjacent outside of the surrounding floor material portion, is a filler.

3. A method according to claim 1 or 2, wherein the detail is attached by means of a screw or nail joint to joists included in the building component.

4. A method according to claim 1, 2 or 3, wherein the step of attaching portions of the underside of a mounting flange of the detail to joists comprises the steps of: attaching, by means of a pair of lugs projecting from the underside of the flange, the detail to a first joist; arranging a supporting means between the underside of the detail and the building component for orientation of the detail; arranging a second joist approximately parallel with said first joist; and attaching the detail to the second joist by means of at least one lug projecting from the underside of the flange.

5. A method according to any preceding claim, wherein the covering material is a mat or a wallpaper.

6. A method according to claim 5, wherein the mat or the wallpaper is glued on to the floor material portion and the upper side and inside of the flange, and a clamping ring is applied to press the mat or the wallpaper against the inside of the flange.

7. A method as claimed in claim 6, wherein a pair of diametrically opposite snapping means on the underside of the clamping ring are oriented over corresponding snapping means in the building detail, and the clamping ring is pressed against the building detail to bring the respective snapping means into engagement with one another.

8. A method of joining a detail to a building component as claimed in claim 1 and substantially as described herein.

9. A detail mounted on a building component substantially as described herein with reference to, and as shown in, the accompanying drawings.